1 //===--- CompilerInvocation.cpp -------------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "clang/Frontend/CompilerInvocation.h"
11 #include "clang/Basic/FileManager.h"
12 #include "clang/Basic/Version.h"
13 #include "clang/Config/config.h"
14 #include "clang/Driver/DriverDiagnostic.h"
15 #include "clang/Driver/Options.h"
16 #include "clang/Driver/Util.h"
17 #include "clang/Frontend/FrontendDiagnostic.h"
18 #include "clang/Frontend/LangStandard.h"
19 #include "clang/Frontend/Utils.h"
20 #include "clang/Lex/HeaderSearchOptions.h"
21 #include "clang/Serialization/ASTReader.h"
22 #include "llvm/ADT/Hashing.h"
23 #include "llvm/ADT/STLExtras.h"
24 #include "llvm/ADT/SmallVector.h"
25 #include "llvm/ADT/StringExtras.h"
26 #include "llvm/ADT/StringSwitch.h"
27 #include "llvm/ADT/Triple.h"
28 #include "llvm/Option/Arg.h"
29 #include "llvm/Option/ArgList.h"
30 #include "llvm/Option/OptTable.h"
31 #include "llvm/Option/Option.h"
32 #include "llvm/Support/CodeGen.h"
33 #include "llvm/Support/ErrorHandling.h"
34 #include "llvm/Support/FileSystem.h"
35 #include "llvm/Support/Host.h"
36 #include "llvm/Support/Path.h"
37 #include "llvm/Support/Process.h"
41 #include <system_error>
42 using namespace clang;
44 //===----------------------------------------------------------------------===//
46 //===----------------------------------------------------------------------===//
48 CompilerInvocationBase::CompilerInvocationBase()
49 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()),
50 DiagnosticOpts(new DiagnosticOptions()),
51 HeaderSearchOpts(new HeaderSearchOptions()),
52 PreprocessorOpts(new PreprocessorOptions()) {}
54 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X)
55 : RefCountedBase<CompilerInvocation>(),
56 LangOpts(new LangOptions(*X.getLangOpts())),
57 TargetOpts(new TargetOptions(X.getTargetOpts())),
58 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())),
59 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())),
60 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {}
62 CompilerInvocationBase::~CompilerInvocationBase() {}
64 //===----------------------------------------------------------------------===//
65 // Deserialization (from args)
66 //===----------------------------------------------------------------------===//
68 using namespace clang::driver;
69 using namespace clang::driver::options;
70 using namespace llvm::opt;
74 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK,
75 DiagnosticsEngine &Diags) {
76 unsigned DefaultOpt = 0;
77 if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable))
80 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
81 if (A->getOption().matches(options::OPT_O0))
84 if (A->getOption().matches(options::OPT_Ofast))
87 assert (A->getOption().matches(options::OPT_O));
89 StringRef S(A->getValue());
90 if (S == "s" || S == "z" || S.empty())
93 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags);
99 static unsigned getOptimizationLevelSize(ArgList &Args) {
100 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
101 if (A->getOption().matches(options::OPT_O)) {
102 switch (A->getValue()[0]) {
115 static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group,
116 OptSpecifier GroupWithValue,
117 std::vector<std::string> &Diagnostics) {
118 for (Arg *A : Args.filtered(Group)) {
119 if (A->getOption().getKind() == Option::FlagClass) {
120 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add
121 // its name (minus the "W" or "R" at the beginning) to the warning list.
122 Diagnostics.push_back(A->getOption().getName().drop_front(1));
123 } else if (A->getOption().matches(GroupWithValue)) {
124 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic group.
125 Diagnostics.push_back(A->getOption().getName().drop_front(1).rtrim("=-"));
127 // Otherwise, add its value (for OPT_W_Joined and similar).
128 for (const char *Arg : A->getValues())
129 Diagnostics.push_back(Arg);
134 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
135 DiagnosticsEngine &Diags) {
136 using namespace options;
138 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
139 StringRef Name = A->getValue();
140 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
141 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
142 .Case(CMDFLAG, NAME##Model)
143 #include "clang/StaticAnalyzer/Core/Analyses.def"
145 if (Value == NumStores) {
146 Diags.Report(diag::err_drv_invalid_value)
147 << A->getAsString(Args) << Name;
150 Opts.AnalysisStoreOpt = Value;
154 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
155 StringRef Name = A->getValue();
156 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
157 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
158 .Case(CMDFLAG, NAME##Model)
159 #include "clang/StaticAnalyzer/Core/Analyses.def"
160 .Default(NumConstraints);
161 if (Value == NumConstraints) {
162 Diags.Report(diag::err_drv_invalid_value)
163 << A->getAsString(Args) << Name;
166 Opts.AnalysisConstraintsOpt = Value;
170 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
171 StringRef Name = A->getValue();
172 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
173 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \
174 .Case(CMDFLAG, PD_##NAME)
175 #include "clang/StaticAnalyzer/Core/Analyses.def"
176 .Default(NUM_ANALYSIS_DIAG_CLIENTS);
177 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) {
178 Diags.Report(diag::err_drv_invalid_value)
179 << A->getAsString(Args) << Name;
182 Opts.AnalysisDiagOpt = Value;
186 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) {
187 StringRef Name = A->getValue();
188 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name)
189 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \
191 #include "clang/StaticAnalyzer/Core/Analyses.def"
192 .Default(NumPurgeModes);
193 if (Value == NumPurgeModes) {
194 Diags.Report(diag::err_drv_invalid_value)
195 << A->getAsString(Args) << Name;
198 Opts.AnalysisPurgeOpt = Value;
202 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) {
203 StringRef Name = A->getValue();
204 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name)
205 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \
207 #include "clang/StaticAnalyzer/Core/Analyses.def"
208 .Default(NumInliningModes);
209 if (Value == NumInliningModes) {
210 Diags.Report(diag::err_drv_invalid_value)
211 << A->getAsString(Args) << Name;
214 Opts.InliningMode = Value;
218 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help);
219 Opts.DisableAllChecks = Args.hasArg(OPT_analyzer_disable_all_checks);
221 Opts.visualizeExplodedGraphWithGraphViz =
222 Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
223 Opts.visualizeExplodedGraphWithUbiGraph =
224 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
225 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted);
226 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
227 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
228 Opts.AnalyzeNestedBlocks =
229 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
230 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume);
231 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
232 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
233 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
234 Opts.maxBlockVisitOnPath =
235 getLastArgIntValue(Args, OPT_analyzer_max_loop, 4, Diags);
236 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats);
237 Opts.InlineMaxStackDepth =
238 getLastArgIntValue(Args, OPT_analyzer_inline_max_stack_depth,
239 Opts.InlineMaxStackDepth, Diags);
241 Opts.CheckersControlList.clear();
242 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker,
243 OPT_analyzer_disable_checker),
244 ie = Args.filtered_end(); it != ie; ++it) {
247 bool enable = (A->getOption().getID() == OPT_analyzer_checker);
248 // We can have a list of comma separated checker names, e.g:
249 // '-analyzer-checker=cocoa,unix'
250 StringRef checkerList = A->getValue();
251 SmallVector<StringRef, 4> checkers;
252 checkerList.split(checkers, ",");
253 for (unsigned i = 0, e = checkers.size(); i != e; ++i)
254 Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable));
257 // Go through the analyzer configuration options.
258 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_config),
259 ie = Args.filtered_end(); it != ie; ++it) {
262 // We can have a list of comma separated config names, e.g:
263 // '-analyzer-config key1=val1,key2=val2'
264 StringRef configList = A->getValue();
265 SmallVector<StringRef, 4> configVals;
266 configList.split(configVals, ",");
267 for (unsigned i = 0, e = configVals.size(); i != e; ++i) {
269 std::tie(key, val) = configVals[i].split("=");
271 Diags.Report(SourceLocation(),
272 diag::err_analyzer_config_no_value) << configVals[i];
276 if (val.find('=') != StringRef::npos) {
277 Diags.Report(SourceLocation(),
278 diag::err_analyzer_config_multiple_values)
283 Opts.Config[key] = val;
290 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) {
291 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error);
292 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal);
296 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) {
297 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands);
298 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments);
301 static StringRef getCodeModel(ArgList &Args, DiagnosticsEngine &Diags) {
302 if (Arg *A = Args.getLastArg(OPT_mcode_model)) {
303 StringRef Value = A->getValue();
304 if (Value == "small" || Value == "kernel" || Value == "medium" ||
307 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value;
312 /// \brief Create a new Regex instance out of the string value in \p RpassArg.
313 /// It returns a pointer to the newly generated Regex instance.
314 static std::shared_ptr<llvm::Regex>
315 GenerateOptimizationRemarkRegex(DiagnosticsEngine &Diags, ArgList &Args,
317 StringRef Val = RpassArg->getValue();
318 std::string RegexError;
319 std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val);
320 if (!Pattern->isValid(RegexError)) {
321 Diags.Report(diag::err_drv_optimization_remark_pattern)
322 << RegexError << RpassArg->getAsString(Args);
328 static void parseSanitizerKinds(StringRef FlagName,
329 const std::vector<std::string> &Sanitizers,
330 DiagnosticsEngine &Diags, SanitizerSet &S) {
331 for (const auto &Sanitizer : Sanitizers) {
332 SanitizerKind K = llvm::StringSwitch<SanitizerKind>(Sanitizer)
333 #define SANITIZER(NAME, ID) .Case(NAME, SanitizerKind::ID)
334 #include "clang/Basic/Sanitizers.def"
335 .Default(SanitizerKind::Unknown);
336 if (K == SanitizerKind::Unknown)
337 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer;
343 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
344 DiagnosticsEngine &Diags,
345 const TargetOptions &TargetOpts) {
346 using namespace options;
349 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags);
350 // TODO: This could be done in Driver
351 unsigned MaxOptLevel = 3;
352 if (OptimizationLevel > MaxOptLevel) {
353 // If the optimization level is not supported, fall back on the default
355 Diags.Report(diag::warn_drv_optimization_value)
356 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel;
357 OptimizationLevel = MaxOptLevel;
359 Opts.OptimizationLevel = OptimizationLevel;
361 // We must always run at least the always inlining pass.
363 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
364 : CodeGenOptions::OnlyAlwaysInlining);
365 // -fno-inline-functions overrides OptimizationLevel > 1.
366 Opts.NoInline = Args.hasArg(OPT_fno_inline);
367 Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ?
368 CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining());
370 if (Args.hasArg(OPT_gline_tables_only)) {
371 Opts.setDebugInfo(CodeGenOptions::DebugLineTablesOnly);
372 } else if (Args.hasArg(OPT_g_Flag) || Args.hasArg(OPT_gdwarf_2) ||
373 Args.hasArg(OPT_gdwarf_3) || Args.hasArg(OPT_gdwarf_4)) {
374 bool Default = false;
375 // Until dtrace (via CTF) and LLDB can deal with distributed debug info,
376 // Darwin and FreeBSD default to standalone/full debug info.
377 if (llvm::Triple(TargetOpts.Triple).isOSDarwin() ||
378 llvm::Triple(TargetOpts.Triple).isOSFreeBSD())
381 if (Args.hasFlag(OPT_fstandalone_debug, OPT_fno_standalone_debug, Default))
382 Opts.setDebugInfo(CodeGenOptions::FullDebugInfo);
384 Opts.setDebugInfo(CodeGenOptions::LimitedDebugInfo);
386 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info);
387 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file);
388 if (Args.hasArg(OPT_gdwarf_2))
389 Opts.DwarfVersion = 2;
390 else if (Args.hasArg(OPT_gdwarf_3))
391 Opts.DwarfVersion = 3;
392 else if (Args.hasArg(OPT_gdwarf_4))
393 Opts.DwarfVersion = 4;
394 else if (Opts.getDebugInfo() != CodeGenOptions::NoDebugInfo)
395 // Default Dwarf version is 4 if we are generating debug information.
396 Opts.DwarfVersion = 4;
398 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
399 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
400 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables);
401 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg(
402 OPT_fuse_register_sized_bitfield_access);
403 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
404 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa);
405 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
406 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
407 Opts.NoCommon = Args.hasArg(OPT_fno_common);
408 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
409 Opts.OptimizeSize = getOptimizationLevelSize(Args);
410 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
411 Args.hasArg(OPT_ffreestanding));
413 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops,
414 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize));
415 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops);
417 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as);
418 Opts.Autolink = !Args.hasArg(OPT_fno_autolink);
419 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ);
420 Opts.ProfileInstrGenerate = Args.hasArg(OPT_fprofile_instr_generate);
421 Opts.InstrProfileInput = Args.getLastArgValue(OPT_fprofile_instr_use_EQ);
422 Opts.CoverageMapping = Args.hasArg(OPT_fcoverage_mapping);
423 Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping);
424 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
425 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions);
426 Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device);
427 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
428 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
429 Opts.CodeModel = getCodeModel(Args, Diags);
430 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
431 Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
432 Opts.DisableFree = Args.hasArg(OPT_disable_free);
433 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls);
434 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
435 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable);
436 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
437 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) ||
438 Args.hasArg(OPT_cl_finite_math_only) ||
439 Args.hasArg(OPT_cl_fast_relaxed_math));
440 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) ||
441 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
442 Args.hasArg(OPT_cl_finite_math_only) ||
443 Args.hasArg(OPT_cl_fast_relaxed_math));
444 Opts.NoSignedZeros = Args.hasArg(OPT_cl_no_signed_zeros);
445 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
446 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option);
447 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags);
448 Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge);
449 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack);
450 Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings);
451 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks);
452 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
453 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
454 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels);
455 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm);
456 Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
457 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums);
458 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) ||
459 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
460 Args.hasArg(OPT_cl_fast_relaxed_math);
461 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
462 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
463 Opts.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix");
464 if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single")
465 Diags.Report(diag::err_drv_invalid_value)
466 << Args.getLastArg(OPT_mthread_model)->getAsString(Args)
468 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ);
469 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array);
471 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections,
472 OPT_fno_function_sections, false);
473 Opts.DataSections = Args.hasFlag(OPT_fdata_sections,
474 OPT_fno_data_sections, false);
475 Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions);
477 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive);
478 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops);
479 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp);
481 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
482 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
484 Opts.DisableGCov = Args.hasArg(OPT_test_coverage);
485 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data);
486 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes);
487 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) {
488 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file);
489 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum);
490 Opts.CoverageNoFunctionNamesInData =
491 Args.hasArg(OPT_coverage_no_function_names_in_data);
492 if (Args.hasArg(OPT_coverage_version_EQ)) {
493 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ);
494 if (CoverageVersion.size() != 4) {
495 Diags.Report(diag::err_drv_invalid_value)
496 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args)
499 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4);
504 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
505 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg);
506 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info);
507 Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections);
508 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir);
509 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file);
510 Opts.SanitizeCoverage =
511 getLastArgIntValue(Args, OPT_fsanitize_coverage, 0, Diags);
512 Opts.SanitizeMemoryTrackOrigins =
513 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags);
514 Opts.SanitizeUndefinedTrapOnError =
515 Args.hasArg(OPT_fsanitize_undefined_trap_on_error);
517 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags);
518 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign);
519 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) {
520 StringRef Val = A->getValue();
521 unsigned StackAlignment = Opts.StackAlignment;
522 Val.getAsInteger(10, StackAlignment);
523 Opts.StackAlignment = StackAlignment;
526 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
527 StringRef Name = A->getValue();
528 unsigned Method = llvm::StringSwitch<unsigned>(Name)
529 .Case("legacy", CodeGenOptions::Legacy)
530 .Case("non-legacy", CodeGenOptions::NonLegacy)
531 .Case("mixed", CodeGenOptions::Mixed)
534 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
537 Opts.setObjCDispatchMethod(
538 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method));
542 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) {
543 StringRef Name = A->getValue();
544 unsigned Model = llvm::StringSwitch<unsigned>(Name)
545 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel)
546 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel)
547 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel)
548 .Case("local-exec", CodeGenOptions::LocalExecTLSModel)
551 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
554 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model));
558 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) {
559 StringRef Val = A->getValue();
561 Opts.setFPContractMode(CodeGenOptions::FPC_Fast);
562 else if (Val == "on")
563 Opts.setFPContractMode(CodeGenOptions::FPC_On);
564 else if (Val == "off")
565 Opts.setFPContractMode(CodeGenOptions::FPC_Off);
567 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
570 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) {
571 if (A->getOption().matches(OPT_fpcc_struct_return)) {
572 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack);
574 assert(A->getOption().matches(OPT_freg_struct_return));
575 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs);
579 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib);
580 bool NeedLocTracking = false;
582 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) {
583 Opts.OptimizationRemarkPattern =
584 GenerateOptimizationRemarkRegex(Diags, Args, A);
585 NeedLocTracking = true;
588 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) {
589 Opts.OptimizationRemarkMissedPattern =
590 GenerateOptimizationRemarkRegex(Diags, Args, A);
591 NeedLocTracking = true;
594 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) {
595 Opts.OptimizationRemarkAnalysisPattern =
596 GenerateOptimizationRemarkRegex(Diags, Args, A);
597 NeedLocTracking = true;
600 // If the user requested to use a sample profile for PGO, then the
601 // backend will need to track source location information so the profile
602 // can be incorporated into the IR.
603 if (!Opts.SampleProfileFile.empty())
604 NeedLocTracking = true;
606 // If the user requested a flag that requires source locations available in
607 // the backend, make sure that the backend tracks source location information.
608 if (NeedLocTracking && Opts.getDebugInfo() == CodeGenOptions::NoDebugInfo)
609 Opts.setDebugInfo(CodeGenOptions::LocTrackingOnly);
611 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file);
613 // Parse -fsanitize-recover= arguments.
614 // FIXME: Report unrecoverable sanitizers incorrectly specified here.
615 parseSanitizerKinds("-fsanitize-recover=",
616 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags,
617 Opts.SanitizeRecover);
622 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
624 using namespace options;
625 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
626 Opts.Targets = Args.getAllArgValues(OPT_MT);
627 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
628 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps);
629 Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
630 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
631 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file);
632 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG);
633 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes);
634 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot);
635 Opts.ModuleDependencyOutputDir =
636 Args.getLastArgValue(OPT_module_dependency_dir);
639 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
640 DiagnosticsEngine *Diags) {
641 using namespace options;
644 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file);
646 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags))
647 Opts.DiagnosticSerializationFile = A->getValue();
648 Opts.IgnoreWarnings = Args.hasArg(OPT_w);
649 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
650 Opts.Pedantic = Args.hasArg(OPT_pedantic);
651 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
652 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
653 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
654 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column,
657 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
658 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
659 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
661 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes));
663 // Default behavior is to not to show note include stacks.
664 Opts.ShowNoteIncludeStack = false;
665 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack,
666 OPT_fno_diagnostics_show_note_include_stack))
667 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack))
668 Opts.ShowNoteIncludeStack = true;
670 StringRef ShowOverloads =
671 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
672 if (ShowOverloads == "best")
673 Opts.setShowOverloads(Ovl_Best);
674 else if (ShowOverloads == "all")
675 Opts.setShowOverloads(Ovl_All);
679 Diags->Report(diag::err_drv_invalid_value)
680 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
684 StringRef ShowCategory =
685 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
686 if (ShowCategory == "none")
687 Opts.ShowCategories = 0;
688 else if (ShowCategory == "id")
689 Opts.ShowCategories = 1;
690 else if (ShowCategory == "name")
691 Opts.ShowCategories = 2;
695 Diags->Report(diag::err_drv_invalid_value)
696 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
701 Args.getLastArgValue(OPT_fdiagnostics_format, "clang");
702 if (Format == "clang")
703 Opts.setFormat(DiagnosticOptions::Clang);
704 else if (Format == "msvc")
705 Opts.setFormat(DiagnosticOptions::Msvc);
706 else if (Format == "msvc-fallback") {
707 Opts.setFormat(DiagnosticOptions::Msvc);
708 Opts.CLFallbackMode = true;
709 } else if (Format == "vi")
710 Opts.setFormat(DiagnosticOptions::Vi);
714 Diags->Report(diag::err_drv_invalid_value)
715 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args)
719 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
720 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
721 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location);
722 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
723 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type);
724 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree);
725 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags);
726 Opts.MacroBacktraceLimit =
727 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit,
728 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
729 Opts.TemplateBacktraceLimit = getLastArgIntValue(
730 Args, OPT_ftemplate_backtrace_limit,
731 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags);
732 Opts.ConstexprBacktraceLimit = getLastArgIntValue(
733 Args, OPT_fconstexpr_backtrace_limit,
734 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags);
735 Opts.SpellCheckingLimit = getLastArgIntValue(
736 Args, OPT_fspell_checking_limit,
737 DiagnosticOptions::DefaultSpellCheckingLimit, Diags);
738 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop,
739 DiagnosticOptions::DefaultTabStop, Diags);
740 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
741 Opts.TabStop = DiagnosticOptions::DefaultTabStop;
743 Diags->Report(diag::warn_ignoring_ftabstop_value)
744 << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
746 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
747 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings);
748 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks);
753 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
754 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
757 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
758 DiagnosticsEngine &Diags) {
759 using namespace options;
760 Opts.ProgramAction = frontend::ParseSyntaxOnly;
761 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
762 switch (A->getOption().getID()) {
764 llvm_unreachable("Invalid option in group!");
766 Opts.ProgramAction = frontend::ASTDeclList; break;
768 case OPT_ast_dump_lookups:
769 Opts.ProgramAction = frontend::ASTDump; break;
771 Opts.ProgramAction = frontend::ASTPrint; break;
773 Opts.ProgramAction = frontend::ASTView; break;
774 case OPT_dump_raw_tokens:
775 Opts.ProgramAction = frontend::DumpRawTokens; break;
776 case OPT_dump_tokens:
777 Opts.ProgramAction = frontend::DumpTokens; break;
779 Opts.ProgramAction = frontend::EmitAssembly; break;
780 case OPT_emit_llvm_bc:
781 Opts.ProgramAction = frontend::EmitBC; break;
783 Opts.ProgramAction = frontend::EmitHTML; break;
785 Opts.ProgramAction = frontend::EmitLLVM; break;
786 case OPT_emit_llvm_only:
787 Opts.ProgramAction = frontend::EmitLLVMOnly; break;
788 case OPT_emit_codegen_only:
789 Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
791 Opts.ProgramAction = frontend::EmitObj; break;
793 Opts.FixItSuffix = A->getValue();
796 Opts.ProgramAction = frontend::FixIt; break;
797 case OPT_emit_module:
798 Opts.ProgramAction = frontend::GenerateModule; break;
800 Opts.ProgramAction = frontend::GeneratePCH; break;
802 Opts.ProgramAction = frontend::GeneratePTH; break;
804 Opts.ProgramAction = frontend::InitOnly; break;
805 case OPT_fsyntax_only:
806 Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
807 case OPT_module_file_info:
808 Opts.ProgramAction = frontend::ModuleFileInfo; break;
810 Opts.ProgramAction = frontend::VerifyPCH; break;
811 case OPT_print_decl_contexts:
812 Opts.ProgramAction = frontend::PrintDeclContext; break;
813 case OPT_print_preamble:
814 Opts.ProgramAction = frontend::PrintPreamble; break;
816 Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
817 case OPT_rewrite_macros:
818 Opts.ProgramAction = frontend::RewriteMacros; break;
819 case OPT_rewrite_objc:
820 Opts.ProgramAction = frontend::RewriteObjC; break;
821 case OPT_rewrite_test:
822 Opts.ProgramAction = frontend::RewriteTest; break;
824 Opts.ProgramAction = frontend::RunAnalysis; break;
826 Opts.ProgramAction = frontend::MigrateSource; break;
828 Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
832 if (const Arg* A = Args.getLastArg(OPT_plugin)) {
833 Opts.Plugins.push_back(A->getValue(0));
834 Opts.ProgramAction = frontend::PluginAction;
835 Opts.ActionName = A->getValue();
837 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
838 end = Args.filtered_end(); it != end; ++it) {
839 if ((*it)->getValue(0) == Opts.ActionName)
840 Opts.PluginArgs.push_back((*it)->getValue(1));
844 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin);
845 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size());
846 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
847 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
848 end = Args.filtered_end(); it != end; ++it) {
849 if ((*it)->getValue(0) == Opts.AddPluginActions[i])
850 Opts.AddPluginArgs[i].push_back((*it)->getValue(1));
854 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
855 Opts.CodeCompletionAt =
856 ParsedSourceLocation::FromString(A->getValue());
857 if (Opts.CodeCompletionAt.FileName.empty())
858 Diags.Report(diag::err_drv_invalid_value)
859 << A->getAsString(Args) << A->getValue();
861 Opts.DisableFree = Args.hasArg(OPT_disable_free);
863 Opts.OutputFile = Args.getLastArgValue(OPT_o);
864 Opts.Plugins = Args.getAllArgValues(OPT_load);
865 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
866 Opts.ShowHelp = Args.hasArg(OPT_help);
867 Opts.ShowStats = Args.hasArg(OPT_print_stats);
868 Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
869 Opts.ShowVersion = Args.hasArg(OPT_version);
870 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
871 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
872 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
873 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings);
874 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile);
875 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp);
876 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump);
877 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter);
878 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups);
879 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index);
880 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex;
881 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file);
882 Opts.ModuleFiles = Args.getAllArgValues(OPT_fmodule_file);
884 Opts.CodeCompleteOpts.IncludeMacros
885 = Args.hasArg(OPT_code_completion_macros);
886 Opts.CodeCompleteOpts.IncludeCodePatterns
887 = Args.hasArg(OPT_code_completion_patterns);
888 Opts.CodeCompleteOpts.IncludeGlobals
889 = !Args.hasArg(OPT_no_code_completion_globals);
890 Opts.CodeCompleteOpts.IncludeBriefComments
891 = Args.hasArg(OPT_code_completion_brief_comments);
893 Opts.OverrideRecordLayoutsFile
894 = Args.getLastArgValue(OPT_foverride_record_layout_EQ);
895 if (const Arg *A = Args.getLastArg(OPT_arcmt_check,
897 OPT_arcmt_migrate)) {
898 switch (A->getOption().getID()) {
900 llvm_unreachable("missed a case");
901 case OPT_arcmt_check:
902 Opts.ARCMTAction = FrontendOptions::ARCMT_Check;
904 case OPT_arcmt_modify:
905 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify;
907 case OPT_arcmt_migrate:
908 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate;
912 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory);
913 Opts.ARCMTMigrateReportOut
914 = Args.getLastArgValue(OPT_arcmt_migrate_report_output);
915 Opts.ARCMTMigrateEmitARCErrors
916 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors);
918 if (Args.hasArg(OPT_objcmt_migrate_literals))
919 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals;
920 if (Args.hasArg(OPT_objcmt_migrate_subscripting))
921 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting;
922 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax))
923 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax;
924 if (Args.hasArg(OPT_objcmt_migrate_property))
925 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property;
926 if (Args.hasArg(OPT_objcmt_migrate_readonly_property))
927 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty;
928 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property))
929 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty;
930 if (Args.hasArg(OPT_objcmt_migrate_annotation))
931 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation;
932 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property))
933 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty;
934 if (Args.hasArg(OPT_objcmt_migrate_instancetype))
935 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype;
936 if (Args.hasArg(OPT_objcmt_migrate_nsmacros))
937 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros;
938 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance))
939 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance;
940 if (Args.hasArg(OPT_objcmt_atomic_property))
941 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty;
942 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly))
943 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty;
944 if (Args.hasArg(OPT_objcmt_migrate_designated_init))
945 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer;
946 if (Args.hasArg(OPT_objcmt_migrate_all))
947 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls;
949 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path);
951 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None &&
952 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) {
953 Diags.Report(diag::err_drv_argument_not_allowed_with)
954 << "ARC migration" << "ObjC migration";
957 InputKind DashX = IK_None;
958 if (const Arg *A = Args.getLastArg(OPT_x)) {
959 DashX = llvm::StringSwitch<InputKind>(A->getValue())
961 .Case("cl", IK_OpenCL)
962 .Case("cuda", IK_CUDA)
964 .Case("objective-c", IK_ObjC)
965 .Case("objective-c++", IK_ObjCXX)
966 .Case("cpp-output", IK_PreprocessedC)
967 .Case("assembler-with-cpp", IK_Asm)
968 .Case("c++-cpp-output", IK_PreprocessedCXX)
969 .Case("objective-c-cpp-output", IK_PreprocessedObjC)
970 .Case("objc-cpp-output", IK_PreprocessedObjC)
971 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
972 .Case("objc++-cpp-output", IK_PreprocessedObjCXX)
973 .Case("c-header", IK_C)
974 .Case("cl-header", IK_OpenCL)
975 .Case("objective-c-header", IK_ObjC)
976 .Case("c++-header", IK_CXX)
977 .Case("objective-c++-header", IK_ObjCXX)
978 .Cases("ast", "pcm", IK_AST)
979 .Case("ir", IK_LLVM_IR)
981 if (DashX == IK_None)
982 Diags.Report(diag::err_drv_invalid_value)
983 << A->getAsString(Args) << A->getValue();
986 // '-' is the default input if none is given.
987 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
990 Inputs.push_back("-");
991 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
992 InputKind IK = DashX;
994 IK = FrontendOptions::getInputKindForExtension(
995 StringRef(Inputs[i]).rsplit('.').second);
996 // FIXME: Remove this hack.
1000 Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK));
1006 std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1008 std::string ClangExecutable =
1009 llvm::sys::fs::getMainExecutable(Argv0, MainAddr);
1010 StringRef Dir = llvm::sys::path::parent_path(ClangExecutable);
1012 // Compute the path to the resource directory.
1013 StringRef ClangResourceDir(CLANG_RESOURCE_DIR);
1014 SmallString<128> P(Dir);
1015 if (ClangResourceDir != "") {
1016 llvm::sys::path::append(P, ClangResourceDir);
1018 StringRef ClangLibdirSuffix(CLANG_LIBDIR_SUFFIX);
1019 llvm::sys::path::append(P, "..", Twine("lib") + ClangLibdirSuffix, "clang",
1020 CLANG_VERSION_STRING);
1026 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1027 using namespace options;
1028 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1029 Opts.Verbose = Args.hasArg(OPT_v);
1030 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1031 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc);
1032 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1033 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ))
1034 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0);
1035 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1036 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path);
1037 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path);
1038 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash);
1039 // -fmodules implies -fmodule-maps
1040 Opts.ModuleMaps = Args.hasArg(OPT_fmodule_maps) || Args.hasArg(OPT_fmodules);
1041 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd);
1042 Opts.ModuleCachePruneInterval =
1043 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60);
1044 Opts.ModuleCachePruneAfter =
1045 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60);
1046 Opts.ModulesValidateOncePerBuildSession =
1047 Args.hasArg(OPT_fmodules_validate_once_per_build_session);
1048 Opts.BuildSessionTimestamp =
1049 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0);
1050 Opts.ModulesValidateSystemHeaders =
1051 Args.hasArg(OPT_fmodules_validate_system_headers);
1053 for (arg_iterator it = Args.filtered_begin(OPT_fmodules_ignore_macro),
1054 ie = Args.filtered_end();
1056 StringRef MacroDef = (*it)->getValue();
1057 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first);
1060 // Add -I..., -F..., and -index-header-map options in order.
1061 bool IsIndexHeaderMap = false;
1062 for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F,
1063 OPT_index_header_map),
1064 ie = Args.filtered_end(); it != ie; ++it) {
1065 if ((*it)->getOption().matches(OPT_index_header_map)) {
1066 // -index-header-map applies to the next -I or -F.
1067 IsIndexHeaderMap = true;
1071 frontend::IncludeDirGroup Group
1072 = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled;
1074 Opts.AddPath((*it)->getValue(), Group,
1075 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true);
1076 IsIndexHeaderMap = false;
1079 // Add -iprefix/-iwithprefix/-iwithprefixbefore options.
1080 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1081 for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1082 OPT_iwithprefixbefore),
1083 ie = Args.filtered_end(); it != ie; ++it) {
1085 if (A->getOption().matches(OPT_iprefix))
1086 Prefix = A->getValue();
1087 else if (A->getOption().matches(OPT_iwithprefix))
1088 Opts.AddPath(Prefix.str() + A->getValue(),
1089 frontend::After, false, true);
1091 Opts.AddPath(Prefix.str() + A->getValue(),
1092 frontend::Angled, false, true);
1095 for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1096 ie = Args.filtered_end(); it != ie; ++it)
1097 Opts.AddPath((*it)->getValue(), frontend::After, false, true);
1098 for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1099 ie = Args.filtered_end(); it != ie; ++it)
1100 Opts.AddPath((*it)->getValue(), frontend::Quoted, false, true);
1101 for (arg_iterator it = Args.filtered_begin(OPT_isystem,
1102 OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it)
1103 Opts.AddPath((*it)->getValue(), frontend::System, false,
1104 !(*it)->getOption().matches(OPT_iwithsysroot));
1105 for (arg_iterator it = Args.filtered_begin(OPT_iframework),
1106 ie = Args.filtered_end(); it != ie; ++it)
1107 Opts.AddPath((*it)->getValue(), frontend::System, true, true);
1109 // Add the paths for the various language specific isystem flags.
1110 for (arg_iterator it = Args.filtered_begin(OPT_c_isystem),
1111 ie = Args.filtered_end(); it != ie; ++it)
1112 Opts.AddPath((*it)->getValue(), frontend::CSystem, false, true);
1113 for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem),
1114 ie = Args.filtered_end(); it != ie; ++it)
1115 Opts.AddPath((*it)->getValue(), frontend::CXXSystem, false, true);
1116 for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem),
1117 ie = Args.filtered_end(); it != ie; ++it)
1118 Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, false,true);
1119 for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem),
1120 ie = Args.filtered_end(); it != ie; ++it)
1121 Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, false, true);
1123 // Add the internal paths from a driver that detects standard include paths.
1124 for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem,
1125 OPT_internal_externc_isystem),
1126 E = Args.filtered_end();
1128 frontend::IncludeDirGroup Group = frontend::System;
1129 if ((*I)->getOption().matches(OPT_internal_externc_isystem))
1130 Group = frontend::ExternCSystem;
1131 Opts.AddPath((*I)->getValue(), Group, false, true);
1134 // Add the path prefixes which are implicitly treated as being system headers.
1135 for (arg_iterator I = Args.filtered_begin(OPT_system_header_prefix,
1136 OPT_no_system_header_prefix),
1137 E = Args.filtered_end();
1139 Opts.AddSystemHeaderPrefix(
1140 (*I)->getValue(), (*I)->getOption().matches(OPT_system_header_prefix));
1142 for (arg_iterator I = Args.filtered_begin(OPT_ivfsoverlay),
1143 E = Args.filtered_end(); I != E; ++I)
1144 Opts.AddVFSOverlayFile((*I)->getValue());
1147 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
1148 LangStandard::Kind LangStd) {
1149 // Set some properties which depend solely on the input kind; it would be nice
1150 // to move these to the language standard, and have the driver resolve the
1151 // input kind + language standard.
1153 Opts.AsmPreprocessor = 1;
1154 } else if (IK == IK_ObjC ||
1156 IK == IK_PreprocessedObjC ||
1157 IK == IK_PreprocessedObjCXX) {
1158 Opts.ObjC1 = Opts.ObjC2 = 1;
1161 if (LangStd == LangStandard::lang_unspecified) {
1162 // Based on the base language, pick one.
1167 llvm_unreachable("Invalid input kind!");
1169 LangStd = LangStandard::lang_opencl;
1172 LangStd = LangStandard::lang_cuda;
1176 case IK_PreprocessedC:
1178 case IK_PreprocessedObjC:
1179 LangStd = LangStandard::lang_gnu11;
1182 case IK_PreprocessedCXX:
1184 case IK_PreprocessedObjCXX:
1185 LangStd = LangStandard::lang_gnucxx98;
1190 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1191 Opts.LineComment = Std.hasLineComments();
1192 Opts.C99 = Std.isC99();
1193 Opts.C11 = Std.isC11();
1194 Opts.CPlusPlus = Std.isCPlusPlus();
1195 Opts.CPlusPlus11 = Std.isCPlusPlus11();
1196 Opts.CPlusPlus14 = Std.isCPlusPlus14();
1197 Opts.CPlusPlus1z = Std.isCPlusPlus1z();
1198 Opts.Digraphs = Std.hasDigraphs();
1199 Opts.GNUMode = Std.isGNUMode();
1200 Opts.GNUInline = !Std.isC99();
1201 Opts.HexFloats = Std.hasHexFloats();
1202 Opts.ImplicitInt = Std.hasImplicitInt();
1204 // Set OpenCL Version.
1205 Opts.OpenCL = LangStd == LangStandard::lang_opencl || IK == IK_OpenCL;
1206 if (LangStd == LangStandard::lang_opencl)
1207 Opts.OpenCLVersion = 100;
1208 else if (LangStd == LangStandard::lang_opencl11)
1209 Opts.OpenCLVersion = 110;
1210 else if (LangStd == LangStandard::lang_opencl12)
1211 Opts.OpenCLVersion = 120;
1212 else if (LangStd == LangStandard::lang_opencl20)
1213 Opts.OpenCLVersion = 200;
1215 // OpenCL has some additional defaults.
1218 Opts.CXXOperatorNames = 1;
1219 Opts.LaxVectorConversions = 0;
1220 Opts.DefaultFPContract = 1;
1221 Opts.NativeHalfType = 1;
1224 Opts.CUDA = LangStd == LangStandard::lang_cuda || IK == IK_CUDA;
1226 // OpenCL and C++ both have bool, true, false keywords.
1227 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1229 // OpenCL has half keyword
1230 Opts.Half = Opts.OpenCL;
1232 // C++ has wchar_t keyword.
1233 Opts.WChar = Opts.CPlusPlus;
1235 Opts.GNUKeywords = Opts.GNUMode;
1236 Opts.CXXOperatorNames = Opts.CPlusPlus;
1238 Opts.DollarIdents = !Opts.AsmPreprocessor;
1240 // C++14 onwards has sized global deallocation functions.
1241 Opts.SizedDeallocation = Opts.CPlusPlus14;
1244 /// Attempt to parse a visibility value out of the given argument.
1245 static Visibility parseVisibility(Arg *arg, ArgList &args,
1246 DiagnosticsEngine &diags) {
1247 StringRef value = arg->getValue();
1248 if (value == "default") {
1249 return DefaultVisibility;
1250 } else if (value == "hidden") {
1251 return HiddenVisibility;
1252 } else if (value == "protected") {
1253 // FIXME: diagnose if target does not support protected visibility
1254 return ProtectedVisibility;
1257 diags.Report(diag::err_drv_invalid_value)
1258 << arg->getAsString(args) << value;
1259 return DefaultVisibility;
1262 static unsigned parseMSCVersion(ArgList &Args, DiagnosticsEngine &Diags) {
1263 auto Arg = Args.getLastArg(OPT_fms_compatibility_version);
1267 // The MSC versioning scheme involves four versioning components:
1273 // We accept either the old style (_MSC_VER) value, or a _MSC_FULL_VER value.
1274 // Additionally, the value may be provided in the form of a more readable
1275 // MM.mm.bbbbb.pp version.
1277 // Unfortunately, due to the bit-width limitations, we cannot currently encode
1278 // the value for the patch level.
1280 unsigned VC[4] = {0};
1281 StringRef Value = Arg->getValue();
1282 SmallVector<StringRef, 4> Components;
1284 Value.split(Components, ".", llvm::array_lengthof(VC));
1285 for (unsigned CI = 0,
1286 CE = std::min(Components.size(), llvm::array_lengthof(VC));
1288 if (Components[CI].getAsInteger(10, VC[CI])) {
1289 Diags.Report(diag::err_drv_invalid_value)
1290 << Arg->getAsString(Args) << Value;
1295 // FIXME we cannot encode the patch level
1296 return VC[0] * 10000000 + VC[1] * 100000 + VC[2];
1299 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1300 DiagnosticsEngine &Diags) {
1301 // FIXME: Cleanup per-file based stuff.
1302 LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1303 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1304 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
1305 #define LANGSTANDARD(id, name, desc, features) \
1306 .Case(name, LangStandard::lang_##id)
1307 #include "clang/Frontend/LangStandards.def"
1308 .Default(LangStandard::lang_unspecified);
1309 if (LangStd == LangStandard::lang_unspecified)
1310 Diags.Report(diag::err_drv_invalid_value)
1311 << A->getAsString(Args) << A->getValue();
1313 // Valid standard, check to make sure language and standard are
1315 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1319 case IK_PreprocessedC:
1320 case IK_PreprocessedObjC:
1321 if (!(Std.isC89() || Std.isC99()))
1322 Diags.Report(diag::err_drv_argument_not_allowed_with)
1323 << A->getAsString(Args) << "C/ObjC";
1327 case IK_PreprocessedCXX:
1328 case IK_PreprocessedObjCXX:
1329 if (!Std.isCPlusPlus())
1330 Diags.Report(diag::err_drv_argument_not_allowed_with)
1331 << A->getAsString(Args) << "C++/ObjC++";
1335 Diags.Report(diag::err_drv_argument_not_allowed_with)
1336 << A->getAsString(Args) << "OpenCL";
1339 if (!Std.isCPlusPlus())
1340 Diags.Report(diag::err_drv_argument_not_allowed_with)
1341 << A->getAsString(Args) << "CUDA";
1349 // -cl-std only applies for OpenCL language standards.
1350 // Override the -std option in this case.
1351 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
1352 LangStandard::Kind OpenCLLangStd
1353 = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
1354 .Case("CL", LangStandard::lang_opencl)
1355 .Case("CL1.1", LangStandard::lang_opencl11)
1356 .Case("CL1.2", LangStandard::lang_opencl12)
1357 .Case("CL2.0", LangStandard::lang_opencl20)
1358 .Default(LangStandard::lang_unspecified);
1360 if (OpenCLLangStd == LangStandard::lang_unspecified) {
1361 Diags.Report(diag::err_drv_invalid_value)
1362 << A->getAsString(Args) << A->getValue();
1365 LangStd = OpenCLLangStd;
1368 CompilerInvocation::setLangDefaults(Opts, IK, LangStd);
1370 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1371 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1372 // while a subset (the non-C++ GNU keywords) is provided by GCC's
1373 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1374 // name, as it doesn't seem a useful distinction.
1375 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1378 if (Args.hasArg(OPT_fno_operator_names))
1379 Opts.CXXOperatorNames = 0;
1381 if (Args.hasArg(OPT_fcuda_is_device))
1382 Opts.CUDAIsDevice = 1;
1385 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) {
1386 StringRef value = arg->getValue();
1387 if (Opts.ObjCRuntime.tryParse(value))
1388 Diags.Report(diag::err_drv_unknown_objc_runtime) << value;
1391 if (Args.hasArg(OPT_fobjc_gc_only))
1392 Opts.setGC(LangOptions::GCOnly);
1393 else if (Args.hasArg(OPT_fobjc_gc))
1394 Opts.setGC(LangOptions::HybridGC);
1395 else if (Args.hasArg(OPT_fobjc_arc)) {
1396 Opts.ObjCAutoRefCount = 1;
1397 if (!Opts.ObjCRuntime.allowsARC())
1398 Diags.Report(diag::err_arc_unsupported_on_runtime);
1400 // Only set ObjCARCWeak if ARC is enabled.
1401 if (Args.hasArg(OPT_fobjc_runtime_has_weak))
1402 Opts.ObjCARCWeak = 1;
1404 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak();
1407 if (Args.hasArg(OPT_fno_objc_infer_related_result_type))
1408 Opts.ObjCInferRelatedResultType = 0;
1410 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime))
1411 Opts.ObjCSubscriptingLegacyRuntime =
1412 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX);
1415 if (Args.hasArg(OPT_fgnu89_inline))
1418 if (Args.hasArg(OPT_fapple_kext)) {
1419 if (!Opts.CPlusPlus)
1420 Diags.Report(diag::warn_c_kext);
1425 if (Args.hasArg(OPT_print_ivar_layout))
1426 Opts.ObjCGCBitmapPrint = 1;
1427 if (Args.hasArg(OPT_fno_constant_cfstrings))
1428 Opts.NoConstantCFStrings = 1;
1430 if (Args.hasArg(OPT_faltivec))
1433 if (Args.hasArg(OPT_pthread))
1434 Opts.POSIXThreads = 1;
1436 // The value-visibility mode defaults to "default".
1437 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) {
1438 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags));
1440 Opts.setValueVisibilityMode(DefaultVisibility);
1443 // The type-visibility mode defaults to the value-visibility mode.
1444 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) {
1445 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags));
1447 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode());
1450 if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1451 Opts.InlineVisibilityHidden = 1;
1453 if (Args.hasArg(OPT_ftrapv)) {
1454 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1455 // Set the handler, if one is specified.
1456 Opts.OverflowHandler =
1457 Args.getLastArgValue(OPT_ftrapv_handler);
1459 else if (Args.hasArg(OPT_fwrapv))
1460 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1462 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility);
1463 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions);
1464 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt;
1465 Opts.MSCompatibilityVersion = parseMSCVersion(Args, Diags);
1467 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1468 // is specified, or -std is set to a conforming mode.
1469 // Trigraphs are disabled by default in c++1z onwards.
1470 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus1z;
1472 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs);
1474 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1475 OPT_fno_dollars_in_identifiers,
1477 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1478 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags);
1479 Opts.Borland = Args.hasArg(OPT_fborland_extensions);
1480 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1481 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings,
1483 if (Args.hasArg(OPT_fno_lax_vector_conversions))
1484 Opts.LaxVectorConversions = 0;
1485 if (Args.hasArg(OPT_fno_threadsafe_statics))
1486 Opts.ThreadsafeStatics = 0;
1487 Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1488 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions);
1489 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions);
1490 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1491 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp);
1493 Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1494 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data);
1495 Opts.Blocks = Args.hasArg(OPT_fblocks);
1496 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional);
1497 Opts.Modules = Args.hasArg(OPT_fmodules);
1498 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse);
1499 Opts.ModulesDeclUse =
1500 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse;
1501 Opts.ModulesSearchAll = Opts.Modules &&
1502 !Args.hasArg(OPT_fno_modules_search_all) &&
1503 Args.hasArg(OPT_fmodules_search_all);
1504 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery);
1505 Opts.ModulesImplicitMaps = Args.hasFlag(OPT_fmodules_implicit_maps,
1506 OPT_fno_modules_implicit_maps, true);
1507 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char);
1508 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar);
1509 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false);
1510 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
1511 Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1512 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1513 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin);
1514 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1515 Opts.SizedDeallocation |= Args.hasArg(OPT_fsized_deallocation);
1516 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1517 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1518 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1519 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno);
1520 Opts.InstantiationDepth =
1521 getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags);
1523 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags);
1524 Opts.ConstexprCallDepth =
1525 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags);
1526 Opts.ConstexprStepLimit =
1527 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags);
1528 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags);
1529 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing);
1530 Opts.NumLargeByValueCopy =
1531 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags);
1532 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields);
1533 Opts.ObjCConstantStringClass =
1534 Args.getLastArgValue(OPT_fconstant_string_class);
1535 Opts.ObjCDefaultSynthProperties =
1536 !Args.hasArg(OPT_disable_objc_default_synthesize_properties);
1537 Opts.EncodeExtendedBlockSig =
1538 Args.hasArg(OPT_fencode_extended_block_signature);
1539 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1540 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags);
1541 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags);
1542 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
1543 Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags);
1544 Opts.Static = Args.hasArg(OPT_static_define);
1545 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple);
1546 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple
1547 || Args.hasArg(OPT_fdump_record_layouts);
1548 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1549 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
1550 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1551 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant);
1552 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math);
1553 Opts.MRTD = Args.hasArg(OPT_mrtd);
1554 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat);
1555 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map);
1556 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype);
1557 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support);
1558 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id);
1559 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal);
1560 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack);
1561 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name);
1562 Opts.ImplementationOfModule =
1563 Args.getLastArgValue(OPT_fmodule_implementation_of);
1564 Opts.NativeHalfType = Opts.NativeHalfType;
1565 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns);
1567 if (!Opts.CurrentModule.empty() && !Opts.ImplementationOfModule.empty() &&
1568 Opts.CurrentModule != Opts.ImplementationOfModule) {
1569 Diags.Report(diag::err_conflicting_module_names)
1570 << Opts.CurrentModule << Opts.ImplementationOfModule;
1573 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) {
1574 switch (llvm::StringSwitch<unsigned>(A->getValue())
1575 .Case("target", LangOptions::ASMM_Target)
1576 .Case("no", LangOptions::ASMM_Off)
1577 .Case("yes", LangOptions::ASMM_On)
1580 Diags.Report(diag::err_drv_invalid_value)
1581 << "-faddress-space-map-mangling=" << A->getValue();
1583 case LangOptions::ASMM_Target:
1584 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target);
1586 case LangOptions::ASMM_On:
1587 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On);
1589 case LangOptions::ASMM_Off:
1590 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off);
1595 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) {
1596 LangOptions::PragmaMSPointersToMembersKind InheritanceModel =
1597 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>(
1600 LangOptions::PPTMK_FullGeneralitySingleInheritance)
1602 LangOptions::PPTMK_FullGeneralityMultipleInheritance)
1604 LangOptions::PPTMK_FullGeneralityVirtualInheritance)
1605 .Default(LangOptions::PPTMK_BestCase);
1606 if (InheritanceModel == LangOptions::PPTMK_BestCase)
1607 Diags.Report(diag::err_drv_invalid_value)
1608 << "-fms-memptr-rep=" << A->getValue();
1610 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel);
1613 // Check if -fopenmp= is specified.
1614 if (const Arg *A = Args.getLastArg(options::OPT_fopenmp_EQ)) {
1615 Opts.OpenMP = llvm::StringSwitch<bool>(A->getValue())
1616 .Case("libiomp5", true)
1620 // Record whether the __DEPRECATED define was requested.
1621 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro,
1622 OPT_fno_deprecated_macro,
1625 // FIXME: Eliminate this dependency.
1626 unsigned Opt = getOptimizationLevel(Args, IK, Diags),
1627 OptSize = getOptimizationLevelSize(Args);
1628 Opts.Optimize = Opt != 0;
1629 Opts.OptimizeSize = OptSize != 0;
1631 // This is the __NO_INLINE__ define, which just depends on things like the
1632 // optimization level and -fno-inline, not actually whether the backend has
1633 // inlining enabled.
1634 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline);
1636 Opts.FastMath = Args.hasArg(OPT_ffast_math) ||
1637 Args.hasArg(OPT_cl_fast_relaxed_math);
1638 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) ||
1639 Args.hasArg(OPT_cl_finite_math_only) ||
1640 Args.hasArg(OPT_cl_fast_relaxed_math);
1642 Opts.RetainCommentsFromSystemHeaders =
1643 Args.hasArg(OPT_fretain_comments_from_system_headers);
1645 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
1648 Diags.Report(diag::err_drv_invalid_value)
1649 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1651 case 0: Opts.setStackProtector(LangOptions::SSPOff); break;
1652 case 1: Opts.setStackProtector(LangOptions::SSPOn); break;
1653 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break;
1654 case 3: Opts.setStackProtector(LangOptions::SSPReq); break;
1657 // Parse -fsanitize= arguments.
1658 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ),
1659 Diags, Opts.Sanitize);
1660 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here.
1661 Opts.SanitizeAddressFieldPadding =
1662 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags);
1663 Opts.SanitizerBlacklistFile = Args.getLastArgValue(OPT_fsanitize_blacklist);
1666 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1667 FileManager &FileMgr,
1668 DiagnosticsEngine &Diags) {
1669 using namespace options;
1670 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
1671 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
1672 if (const Arg *A = Args.getLastArg(OPT_token_cache))
1673 Opts.TokenCache = A->getValue();
1675 Opts.TokenCache = Opts.ImplicitPTHInclude;
1676 Opts.UsePredefines = !Args.hasArg(OPT_undef);
1677 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1678 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
1680 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
1681 for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl),
1682 ie = Args.filtered_end(); it != ie; ++it) {
1684 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue());
1687 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
1688 StringRef Value(A->getValue());
1689 size_t Comma = Value.find(',');
1691 unsigned EndOfLine = 0;
1693 if (Comma == StringRef::npos ||
1694 Value.substr(0, Comma).getAsInteger(10, Bytes) ||
1695 Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
1696 Diags.Report(diag::err_drv_preamble_format);
1698 Opts.PrecompiledPreambleBytes.first = Bytes;
1699 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
1703 // Add macros from the command line.
1704 for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1705 ie = Args.filtered_end(); it != ie; ++it) {
1706 if ((*it)->getOption().matches(OPT_D))
1707 Opts.addMacroDef((*it)->getValue());
1709 Opts.addMacroUndef((*it)->getValue());
1712 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
1714 // Add the ordered list of -includes.
1715 for (arg_iterator it = Args.filtered_begin(OPT_include),
1716 ie = Args.filtered_end(); it != ie; ++it) {
1718 Opts.Includes.push_back(A->getValue());
1721 for (arg_iterator it = Args.filtered_begin(OPT_chain_include),
1722 ie = Args.filtered_end(); it != ie; ++it) {
1724 Opts.ChainedIncludes.push_back(A->getValue());
1727 // Include 'altivec.h' if -faltivec option present
1728 if (Args.hasArg(OPT_faltivec))
1729 Opts.Includes.push_back("altivec.h");
1731 for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1732 ie = Args.filtered_end(); it != ie; ++it) {
1734 std::pair<StringRef,StringRef> Split =
1735 StringRef(A->getValue()).split(';');
1737 if (Split.second.empty()) {
1738 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
1742 Opts.addRemappedFile(Split.first, Split.second);
1745 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) {
1746 StringRef Name = A->getValue();
1747 unsigned Library = llvm::StringSwitch<unsigned>(Name)
1748 .Case("libc++", ARCXX_libcxx)
1749 .Case("libstdc++", ARCXX_libstdcxx)
1750 .Case("none", ARCXX_nolib)
1753 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
1755 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library;
1759 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1761 frontend::ActionKind Action) {
1762 using namespace options;
1765 case frontend::ASTDeclList:
1766 case frontend::ASTDump:
1767 case frontend::ASTPrint:
1768 case frontend::ASTView:
1769 case frontend::EmitAssembly:
1770 case frontend::EmitBC:
1771 case frontend::EmitHTML:
1772 case frontend::EmitLLVM:
1773 case frontend::EmitLLVMOnly:
1774 case frontend::EmitCodeGenOnly:
1775 case frontend::EmitObj:
1776 case frontend::FixIt:
1777 case frontend::GenerateModule:
1778 case frontend::GeneratePCH:
1779 case frontend::GeneratePTH:
1780 case frontend::ParseSyntaxOnly:
1781 case frontend::ModuleFileInfo:
1782 case frontend::VerifyPCH:
1783 case frontend::PluginAction:
1784 case frontend::PrintDeclContext:
1785 case frontend::RewriteObjC:
1786 case frontend::RewriteTest:
1787 case frontend::RunAnalysis:
1788 case frontend::MigrateSource:
1792 case frontend::DumpRawTokens:
1793 case frontend::DumpTokens:
1794 case frontend::InitOnly:
1795 case frontend::PrintPreamble:
1796 case frontend::PrintPreprocessedInput:
1797 case frontend::RewriteMacros:
1798 case frontend::RunPreprocessorOnly:
1799 Opts.ShowCPP = !Args.hasArg(OPT_dM);
1803 Opts.ShowComments = Args.hasArg(OPT_C);
1804 Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1805 Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1806 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1807 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes);
1810 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1811 using namespace options;
1812 Opts.ABI = Args.getLastArgValue(OPT_target_abi);
1813 Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
1814 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath);
1815 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature);
1816 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
1817 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
1819 // Use the default target triple if unspecified.
1820 if (Opts.Triple.empty())
1821 Opts.Triple = llvm::sys::getDefaultTargetTriple();
1824 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1825 const char *const *ArgBegin,
1826 const char *const *ArgEnd,
1827 DiagnosticsEngine &Diags) {
1828 bool Success = true;
1830 // Parse the arguments.
1831 std::unique_ptr<OptTable> Opts(createDriverOptTable());
1832 const unsigned IncludedFlagsBitmask = options::CC1Option;
1833 unsigned MissingArgIndex, MissingArgCount;
1834 std::unique_ptr<InputArgList> Args(
1835 Opts->ParseArgs(ArgBegin, ArgEnd, MissingArgIndex, MissingArgCount,
1836 IncludedFlagsBitmask));
1838 // Check for missing argument error.
1839 if (MissingArgCount) {
1840 Diags.Report(diag::err_drv_missing_argument)
1841 << Args->getArgString(MissingArgIndex) << MissingArgCount;
1845 // Issue errors on unknown arguments.
1846 for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1847 ie = Args->filtered_end(); it != ie; ++it) {
1848 Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args);
1852 Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success;
1853 Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success;
1854 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1855 Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags)
1857 ParseCommentArgs(Res.getLangOpts()->CommentOpts, *Args);
1858 ParseFileSystemArgs(Res.getFileSystemOpts(), *Args);
1859 // FIXME: We shouldn't have to pass the DashX option around here
1860 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1861 ParseTargetArgs(Res.getTargetOpts(), *Args);
1862 Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags,
1863 Res.getTargetOpts()) && Success;
1864 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1865 if (DashX != IK_AST && DashX != IK_LLVM_IR) {
1866 ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags);
1867 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC)
1868 Res.getLangOpts()->ObjCExceptions = 1;
1870 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of
1871 // PCH file and find the original header name. Remove the need to do that in
1872 // ParsePreprocessorArgs and remove the FileManager
1873 // parameters from the function and the "FileManager.h" #include.
1874 FileManager FileMgr(Res.getFileSystemOpts());
1875 ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags);
1876 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args,
1877 Res.getFrontendOpts().ProgramAction);
1883 class ModuleSignature {
1884 SmallVector<uint64_t, 16> Data;
1889 ModuleSignature() : CurBit(0), CurValue(0) { }
1891 void add(uint64_t Value, unsigned Bits);
1892 void add(StringRef Value);
1895 llvm::APInt getAsInteger() const;
1899 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) {
1900 CurValue |= Value << CurBit;
1901 if (CurBit + NumBits < 64) {
1906 // Add the current word.
1907 Data.push_back(CurValue);
1910 CurValue = Value >> (64-CurBit);
1913 CurBit = (CurBit+NumBits) & 63;
1916 void ModuleSignature::flush() {
1920 Data.push_back(CurValue);
1925 void ModuleSignature::add(StringRef Value) {
1926 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I)
1930 llvm::APInt ModuleSignature::getAsInteger() const {
1931 return llvm::APInt(Data.size() * 64, Data);
1934 std::string CompilerInvocation::getModuleHash() const {
1935 // Note: For QoI reasons, the things we use as a hash here should all be
1936 // dumped via the -module-info flag.
1937 using llvm::hash_code;
1938 using llvm::hash_value;
1939 using llvm::hash_combine;
1941 // Start the signature with the compiler version.
1942 // FIXME: We'd rather use something more cryptographically sound than
1943 // CityHash, but this will do for now.
1944 hash_code code = hash_value(getClangFullRepositoryVersion());
1946 // Extend the signature with the language options
1947 #define LANGOPT(Name, Bits, Default, Description) \
1948 code = hash_combine(code, LangOpts->Name);
1949 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
1950 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name()));
1951 #define BENIGN_LANGOPT(Name, Bits, Default, Description)
1952 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description)
1953 #include "clang/Basic/LangOptions.def"
1955 // Extend the signature with the target options.
1956 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU,
1958 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i)
1959 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]);
1961 // Extend the signature with preprocessor options.
1962 const PreprocessorOptions &ppOpts = getPreprocessorOpts();
1963 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts();
1964 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord);
1966 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator
1967 I = getPreprocessorOpts().Macros.begin(),
1968 IEnd = getPreprocessorOpts().Macros.end();
1970 // If we're supposed to ignore this macro for the purposes of modules,
1971 // don't put it into the hash.
1972 if (!hsOpts.ModulesIgnoreMacros.empty()) {
1973 // Check whether we're ignoring this macro.
1974 StringRef MacroDef = I->first;
1975 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first))
1979 code = hash_combine(code, I->first, I->second);
1982 // Extend the signature with the sysroot.
1983 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes,
1984 hsOpts.UseStandardSystemIncludes,
1985 hsOpts.UseStandardCXXIncludes,
1987 code = hash_combine(code, hsOpts.ResourceDir);
1989 // Extend the signature with the user build path.
1990 code = hash_combine(code, hsOpts.ModuleUserBuildPath);
1992 // Darwin-specific hack: if we have a sysroot, use the contents and
1993 // modification time of
1994 // $sysroot/System/Library/CoreServices/SystemVersion.plist
1995 // as part of the module hash.
1996 if (!hsOpts.Sysroot.empty()) {
1997 SmallString<128> systemVersionFile;
1998 systemVersionFile += hsOpts.Sysroot;
1999 llvm::sys::path::append(systemVersionFile, "System");
2000 llvm::sys::path::append(systemVersionFile, "Library");
2001 llvm::sys::path::append(systemVersionFile, "CoreServices");
2002 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist");
2004 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> buffer =
2005 llvm::MemoryBuffer::getFile(systemVersionFile.str());
2007 code = hash_combine(code, buffer.get()->getBuffer());
2009 struct stat statBuf;
2010 if (stat(systemVersionFile.c_str(), &statBuf) == 0)
2011 code = hash_combine(code, statBuf.st_mtime);
2015 return llvm::APInt(64, code).toString(36, /*Signed=*/false);
2020 template<typename IntTy>
2021 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id,
2023 DiagnosticsEngine *Diags) {
2024 IntTy Res = Default;
2025 if (Arg *A = Args.getLastArg(Id)) {
2026 if (StringRef(A->getValue()).getAsInteger(10, Res)) {
2028 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args)
2036 // Declared in clang/Frontend/Utils.h.
2037 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default,
2038 DiagnosticsEngine *Diags) {
2039 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags);
2042 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id,
2044 DiagnosticsEngine *Diags) {
2045 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags);
2048 void BuryPointer(const void *Ptr) {
2049 // This function may be called only a small fixed amount of times per each
2050 // invocation, otherwise we do actually have a leak which we want to report.
2051 // If this function is called more than kGraveYardMaxSize times, the pointers
2052 // will not be properly buried and a leak detector will report a leak, which
2053 // is what we want in such case.
2054 static const size_t kGraveYardMaxSize = 16;
2055 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize];
2056 static std::atomic<unsigned> GraveYardSize;
2057 unsigned Idx = GraveYardSize++;
2058 if (Idx >= kGraveYardMaxSize)
2060 GraveYard[Idx] = Ptr;
2063 IntrusiveRefCntPtr<vfs::FileSystem>
2064 createVFSFromCompilerInvocation(const CompilerInvocation &CI,
2065 DiagnosticsEngine &Diags) {
2066 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty())
2067 return vfs::getRealFileSystem();
2069 IntrusiveRefCntPtr<vfs::OverlayFileSystem>
2070 Overlay(new vfs::OverlayFileSystem(vfs::getRealFileSystem()));
2071 // earlier vfs files are on the bottom
2072 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) {
2073 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer =
2074 llvm::MemoryBuffer::getFile(File);
2076 Diags.Report(diag::err_missing_vfs_overlay_file) << File;
2077 return IntrusiveRefCntPtr<vfs::FileSystem>();
2080 IntrusiveRefCntPtr<vfs::FileSystem> FS =
2081 vfs::getVFSFromYAML(std::move(Buffer.get()), /*DiagHandler*/ nullptr);
2083 Diags.Report(diag::err_invalid_vfs_overlay) << File;
2084 return IntrusiveRefCntPtr<vfs::FileSystem>();
2086 Overlay->pushOverlay(FS);
2090 } // end namespace clang